EP3020974A1 - Systeme de transport de milieux visqueux, procede de fonctionnement d'un tel systeme et unite de transport correspondante - Google Patents

Systeme de transport de milieux visqueux, procede de fonctionnement d'un tel systeme et unite de transport correspondante Download PDF

Info

Publication number
EP3020974A1
EP3020974A1 EP15194702.5A EP15194702A EP3020974A1 EP 3020974 A1 EP3020974 A1 EP 3020974A1 EP 15194702 A EP15194702 A EP 15194702A EP 3020974 A1 EP3020974 A1 EP 3020974A1
Authority
EP
European Patent Office
Prior art keywords
displacement pump
positive displacement
unit
delivery unit
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15194702.5A
Other languages
German (de)
English (en)
Other versions
EP3020974B1 (fr
Inventor
Thomas Coenen
Florian Biegger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pumpenfabrik Wangen GmbH
Original Assignee
Pumpenfabrik Wangen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pumpenfabrik Wangen GmbH filed Critical Pumpenfabrik Wangen GmbH
Publication of EP3020974A1 publication Critical patent/EP3020974A1/fr
Application granted granted Critical
Publication of EP3020974B1 publication Critical patent/EP3020974B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F04C11/006—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle having complementary function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/001—Pumps for particular liquids
    • F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F04C15/008—Prime movers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/05—Speed
    • F04C2270/052—Speed angular
    • F04C2270/0525—Controlled or regulated

Definitions

  • the invention relates to a system for conveying viscous media and a method for operating such a system. Furthermore, the invention relates to a conveyor unit for a previously mentioned system.
  • the supply of the media in the positive displacement pump takes place from above or from the side, so that the medium to be conveyed undergoes a change in direction before the compression in the positive displacement pump.
  • Such systems are susceptible to failure, in particular because of the change in the conveying direction. Consequently, process reliability can not be completely guaranteed.
  • the object of the invention is to provide a system for conveying viscous media, which offers increased reliability and thus improves process reliability, and to promote different media is customizable. It is another object of the invention to provide a method for operating such a system as well as a suitable conveyor unit.
  • the invention is achieved by a system for conveying viscous media, which has a positive displacement pump and a delivery unit.
  • the delivery unit is arranged in the flow direction of a viscous medium before the positive displacement pump and fluidly connected to the positive displacement pump.
  • the positive displacement pump and the delivery unit can have mutually independent drive units.
  • the displacement pump and the delivery unit are preferably arranged in a line, so that a conveying direction of the delivery unit is aligned parallel, in particular coaxially, to a rotational axis of the positive displacement pump.
  • both the positive displacement pump and the delivery unit have a drive unit, wherein the drive units of the positive displacement pump and the delivery unit are independent of each other.
  • the system can be used for different viscous media, with the appropriate for the transport of the respective medium parameters are easily adjustable. Overall, the change of media to be funded is easy and fast to implement.
  • the positive displacement pump, a first drive unit and the conveyor unit to a second drive unit, wherein at least one speed of the first drive unit is independent of a speed of the second drive unit adjustable.
  • the speed of the positive displacement pump and the delivery unit is a relevant parameter for promoting different viscous or non-flowable media.
  • the independently adjustable speed of the positive displacement pump and the delivery unit therefore allows a good adaptation to different viscous media and thus increases the capabilities of the system.
  • the positive displacement pump may be an eccentric screw pump or a screw pump.
  • Such pumps are particularly gentle to the product and are characterized by a simple and hygienic cleaning ability.
  • such pumps are particularly suitable for use in the food industry, for example for conveying doughs in bakery production.
  • a rotary piston pump, a rotary piston pump or a gear pump can be used as positive displacement pump.
  • the delivery unit can be positioned and connected to the positive displacement pump such that a rectilinear supply of the medium to be delivered takes place in the positive displacement pump.
  • the delivery unit may have a stuffing piston or a moving floor or a screw conveyor.
  • a screw conveyor For a continuous supply of the media to be conveyed is particularly suitable a screw conveyor.
  • a stuffing-type piston or a sliding bottom can also be used as a conveying unit. The skilled person selects here depending on the purpose of the appropriate type of conveyor.
  • the screw conveyor may have at least one screw. It is also possible that the screw conveyor comprises a plurality of screws, which are arranged parallel to each other. In that sense, the supply of the viscous Medium into the positive displacement pump by a twin screw conveyor or a multi-screw conveyor.
  • the at least one screw of the screw conveyor has an axis of rotation, which may preferably be arranged parallel, in particular coaxially to a rotational axis of the positive displacement pump. This ensures that a rectilinear feed of the medium to be pumped takes place in the positive displacement pump.
  • the screw can be configured as a full screw or as a hollow screw.
  • the full screw generates a relatively larger delivery thrust and thus ensures a good supply of the medium in the positive displacement pump. For media that tend to stick, but there is a risk of conveyor stop by rolling.
  • the hollow screw on the other hand has advantages in terms of kneading and also provides good ventilation and compaction of the medium to be delivered.
  • the conveyor unit has a closed area, an open area and an ejection area.
  • the closed area may be located between the open area and the ejection area.
  • the tripartite division of the delivery unit is preferably accompanied by a separation of functions.
  • the open area for the supply of the medium can be used in the conveyor unit.
  • the closed area serves for compaction and compression of the medium.
  • the ejection area forms a transition between an interior of the delivery unit and the positive displacement pump.
  • the closed area has an exchangeable bearing.
  • the bearing can be designed as a plain bearing, in particular as a plain bearing sleeve.
  • the closed region may comprise an inner wall which is designed as a sliding surface.
  • the ejection region can taper conically to form an outlet opening.
  • a cone-shaped design of the ejection region is particularly useful for transporting flowable media.
  • the ejection region is longitudinally limited by a plate having an outlet opening. The plate is preferably aligned perpendicular to a longitudinal axis of the conveyor unit.
  • the conveyor unit in particular in the closed area and in the ejection area, has a continuous rectilinear inner floor, preferably aligned in a horizontal plane.
  • a lower foot line of the inner bottom of the positive displacement pump and the delivery unit may be rectilinear.
  • the outlet opening of the conveyor unit is advantageously arranged so that its lower edge is arranged in the foot line and is aligned with the rectilinear inner bottom. This has the advantage that rinsing water, which is used to clean the system, collects on the inner bottom and is thus easily removable. Overall, therefore, the downtime of the system can be reduced for cleaning purposes.
  • the delivery unit preferably in the open area, has a cleaning opening which extends through the inner bottom.
  • the cleaning opening is preferably arranged at the lowest point of the system, so that cleaning liquid, for example rinsing water, can flow well through the cleaning opening.
  • the cleaning opening can be closable.
  • a method for conveying a viscous medium in which a previously described system is used.
  • the medium can advantageously be guided in a straight line, in particular without a change in direction, from the delivery unit into the positive displacement pump.
  • the delivery unit and the positive displacement pump are controlled or regulated independently of each other.
  • the described method can be reacted quickly and easily to a change in the composition of the medium to be delivered.
  • a rotational speed of the delivery unit and / or of the positive displacement pump is a function of a pressure of the medium within the positive displacement pump and / or as a function of a temperature of the positive displacement pump.
  • a control can take place in an advantageous manner, which takes into account the pressure of the medium and / or the temperature of the positive displacement pump.
  • the speed of the delivery unit can be reduced if the pressure of the medium exceeds a predetermined maximum.
  • the speed of the positive displacement pump and / or the delivery unit can be reduced if the temperature of the positive displacement pump exceeds a predetermined maximum. Overall, this ensures process reliability and enables optimal transport performance with low failure risk.
  • Another subsidiary aspect of the invention relates to a delivery unit for a system described above for the promotion of viscous media. It is provided that the delivery unit has a connection flange for fluid-tight connection with a positive displacement pump.
  • the features and advantages of the conveyor unit described in connection with the overall system apply analogously to the single conveyor unit.
  • the embodiments described in detail below each represent a system for conveying viscous media, which has a positive displacement pump 10 and a delivery unit 20.
  • the positive displacement pump 10 can be designed as an eccentric screw pump or as a screw pump.
  • Other positive displacement pumps 10 are possible.
  • a rotary piston pump, a rotary pump or a gear pump can be used.
  • the positive displacement pump 10 has a first drive unit 11, which forms a direct drive for the positive displacement pump 10.
  • the first drive unit 11 is preferably designed as a separately controllable electric motor.
  • the positive displacement pump 10 has a connecting flange 13 which limits an inlet opening. Through the connecting flange 13, the positive displacement pump 10 can be coupled in a fluid-tight manner to the delivery unit 20. Furthermore, a pump outlet 12 is provided which can be connected, for example, to a pipeline. In the embodiments illustrated here, the pump outlet 12 is aligned at right angles to the connecting flange 13. In other words, there is a change in the conveying direction for the viscous medium in the positive displacement pump 10. This applies to all illustrated embodiments. It is advantageous in the system described here that the change in the conveying direction or transport direction takes place only after the introduction of the viscous medium in the positive displacement pump 10.
  • the supply in the positive displacement pump 10 through the inlet opening on the connecting flange 13 is rectilinear. For this purpose, the conveyor unit 20 is designed accordingly.
  • the delivery unit 20 has an open area 14, a closed area 15 and an ejection area 16, respectively.
  • a screw 24 which is designed here as a hollow screw.
  • the conveyor unit 20 has a second drive unit 21.
  • the second drive unit 21 may be formed by a separately controllable electric motor.
  • the two drive units 11, 21 of the positive displacement pump 10 and the delivery unit 20 are preferably connected to a common control, wherein the controller is designed such that both drive units 11, 21 are independently controllable.
  • the rotational speed of the first drive unit 11 and the second drive unit 21 can be independently adjustable.
  • the controller may include a control, which causes an automatic adjustment of the rotational speeds of the drive units 11, 21 based on predetermined parameters. For example, the speed of the first drive unit 11, which acts on the positive displacement pump 10, depending on a temperature of the positive displacement pump 10 and / or a pressure of the medium to be delivered at the pump outlet be adjustable.
  • the speed of the second drive unit 21, which acts on the screw 24, depending on a pressure of the medium in the ejection region 16 may be adjustable. It is preferably provided that the control or regulation of the system takes place mainly by means of the flow rate of the medium to be delivered by the positive displacement pump 10. This serves process reliability. As part of a protective function is preferably provided to use the power consumption of the second drive unit 21 of the conveyor unit 20 as a parameter for the control or regulation. The current consumption of the second drive unit serves as an indicator of an overload of the conveyor unit.
  • the system is switched off to protect against damage or at least reduces the speed of the second drive unit 21.
  • the system preferably has corresponding sensors which are connected to the controller or regulation.
  • the second drive unit 21 of the conveyor unit 20 may be coupled via a deflection gear 33 with the worm 24, which is connected by a drive shaft 23 to the deflection gear 33.
  • the worm 24 extends through the open area 14, which has a feed opening 25.
  • the feed opening 25 can be connectable, for example, to a pouring funnel in order to introduce the medium to be conveyed into the feed unit 20.
  • the closed region 15 has a plain bearing in the form of a plain bearing sleeve 26, the inner diameter of which essentially corresponds to the outer diameter of the screw 24.
  • the plain bearing sleeve 26 may have at least on its inner surface a sliding coating, which may be formed for example by a plastic.
  • the plain bearing sleeve 26 as a whole consists of a material, in particular a plastic, which has sliding properties.
  • the plain bearing sleeve 26 thus forms a guide and storage for the screw 24.
  • the plain bearing sleeve 26 is interchangeable.
  • two retaining rings 27 are provided, which are connected to each other via threaded rods 28 ( Fig. 4 ).
  • the plain bearing sleeve 26 is fixed so that it clamps between the retaining rings 27.
  • the slide bearing sleeve 26 or generally a bearing for the screw 24 is formed in several parts.
  • two half-shells can be provided, which can be connected to one another to form the bearing, in particular the plain bearing sleeve 26.
  • the use of bracing retaining rings can then be dispensed with.
  • the multi-part design of the bearing or the plain bearing sleeve 26 facilitates the assembly of the conveyor unit 20 and simplifies the replacement of the bearing. The above applies to all embodiments of the invention.
  • the delivery unit 20 is constructed identically in the exemplary embodiments described here. However, differences exist in the shape of the ejection area 16.
  • the ejection region 16 has a conical shape, which opens into a central ejection opening 31.
  • the ejection opening 31 is thus aligned concentrically to the axis of rotation of the screw 24.
  • the ejection opening 31 is aligned with the axis of rotation of the screw 24 concentrically or coaxially to the axis of rotation of the positive displacement pump 10. This is in the side view according to Fig. 1 and in the plan view according to Fig. 2 good to see.
  • the concentric cone 34 of the ejection region 16 is integrally formed with a retaining ring 27.
  • the concentric cone 34 analogous to the plain bearing sleeve 26 can be easily replaced.
  • an ejection area 16 can be mounted which has a different geometric design.
  • an asymmetrical cone 35 can be mounted, as in the Fig. 5 and 6 is shown.
  • a cone-shaped ejection region 16 for conveying or transporting flowable medium is expedient.
  • the asymmetrical cone 35 according to Fig. 5 and 6 has the additional advantage that in this way at least in the ejection area 16 and in the closed area 15 a rectilinear inner bottom 29 is formed. This facilitates the cleaning of the delivery unit 20.
  • the inner bottom 29 passes straight into an inner peripheral surface of the positive displacement pump 10.
  • the inner bottom 29 passes straight into an inner peripheral surface of the positive displacement pump 10.
  • the axes of rotation of the screw 24 and the positive displacement pump 10 are offset from one another, they are parallel.
  • the rectilinear inner bottom 29 is lowered in the open area 14, so that in the open area 14 is the lowest point of the entire system.
  • a cleaning opening 32 in the open area 14.
  • the cleaning opening 32 is thus arranged at the lowest point of the overall system, so that rinsing liquid, which is introduced during the cleaning in the conveyor unit 20, can flow independently. This facilitates and speeds up the cleaning process.
  • the device is therefore also suitable for use in hygienically sensitive areas.
  • FIG. 7 A further embodiment which is particularly suitable for transporting or for conveying puncture-resistant or non-flowable media is shown Fig. 7 ,
  • the difference from the aforementioned embodiments is that the ejection region 16 is formed by a plate 30.
  • the plate 30 replaces the cone-shaped ejection region 16 of the preceding embodiments.
  • the plate 30 forms a retaining ring 27 which fixes the plain bearing sleeve 26.
  • an outlet opening 31 is arranged centrally.
  • the outlet opening 31 is aligned coaxially to the axis of rotation of the screw 24 and to the axis of rotation of the positive displacement pump 10. It has been found that the plate 30 assists a particularly even supply of media into the positive displacement pump 10 when the system is used to deliver media having a high internal shear resistance. These are in particular puncture resistant or non-flowable media.
  • the outlet opening 31 may be designed differently geometric and is preferably adapted to the shape of the inlet opening on the connecting flange 13 of the positive displacement pump 10.
  • the outlet port 31 may have an oval cross-section which is widely used at intake ports 31 of rotary lobe pumps, rotary lobe pumps and screw pumps.
  • the outlet opening 31 can also form a circular cross-section, as a result of which the delivery unit 20 can be easily connected to eccentric screw pumps or gear pumps which also have a likewise circular inlet opening 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP15194702.5A 2014-11-17 2015-11-16 Systeme de transport de milieux visqueux, procede de fonctionnement d'un tel systeme et unite de transport correspondante Active EP3020974B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014116779.1A DE102014116779B4 (de) 2014-11-17 2014-11-17 System zur Förderung viskoser Medien und Verfahren zum Fördern eines viskosen Mediums mit einem solchen System

Publications (2)

Publication Number Publication Date
EP3020974A1 true EP3020974A1 (fr) 2016-05-18
EP3020974B1 EP3020974B1 (fr) 2020-09-09

Family

ID=54557288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15194702.5A Active EP3020974B1 (fr) 2014-11-17 2015-11-16 Systeme de transport de milieux visqueux, procede de fonctionnement d'un tel systeme et unite de transport correspondante

Country Status (2)

Country Link
EP (1) EP3020974B1 (fr)
DE (1) DE102014116779B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116601389A (zh) * 2020-09-04 2023-08-15 J·瓦格纳有限责任公司 用于输送粘性建筑材料的带有偏心螺杆泵的输送装置的运行方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021111925A1 (de) 2021-05-07 2022-11-10 Seepex Gmbh Exzenterschneckenpumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3006615A (en) * 1957-07-05 1961-10-31 Hoge Warren Zimmermann Co Continuous mixing, metering and delivering apparatus
US5660465A (en) * 1994-12-06 1997-08-26 Mason; Walter R. Apparatus and system for producing foamed cementitious products
WO1998035135A1 (fr) * 1997-02-07 1998-08-13 J.S. Maskinfabrik A/S Transporteur a vis pour liquides et/ou blocs de materiaux
WO2002018792A2 (fr) * 2000-09-01 2002-03-07 Moyno, Inc. Systeme de pompe a cavite progressive utilise pour transporter des matieres deshydratees, a haute viscosite et a forte teneur en particules solides
DE10160335A1 (de) * 2001-12-07 2003-06-18 Ksb Ag Zuführvorrichtung für eine Exzenterschneckenpumpe
DE10207483C1 (de) * 2002-02-22 2003-06-18 Netzsch Mohnopumpen Gmbh Exzenterschneckenpumpe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5820354A (en) * 1996-11-08 1998-10-13 Robbins & Myers, Inc. Cascaded progressing cavity pump system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3006615A (en) * 1957-07-05 1961-10-31 Hoge Warren Zimmermann Co Continuous mixing, metering and delivering apparatus
US5660465A (en) * 1994-12-06 1997-08-26 Mason; Walter R. Apparatus and system for producing foamed cementitious products
WO1998035135A1 (fr) * 1997-02-07 1998-08-13 J.S. Maskinfabrik A/S Transporteur a vis pour liquides et/ou blocs de materiaux
WO2002018792A2 (fr) * 2000-09-01 2002-03-07 Moyno, Inc. Systeme de pompe a cavite progressive utilise pour transporter des matieres deshydratees, a haute viscosite et a forte teneur en particules solides
DE10160335A1 (de) * 2001-12-07 2003-06-18 Ksb Ag Zuführvorrichtung für eine Exzenterschneckenpumpe
DE10207483C1 (de) * 2002-02-22 2003-06-18 Netzsch Mohnopumpen Gmbh Exzenterschneckenpumpe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116601389A (zh) * 2020-09-04 2023-08-15 J·瓦格纳有限责任公司 用于输送粘性建筑材料的带有偏心螺杆泵的输送装置的运行方法
US11885332B2 (en) 2020-09-04 2024-01-30 J. Wagner Gmbh Operating method for a conveying device with an eccentric screw pump for conveying viscous construction materials

Also Published As

Publication number Publication date
DE102014116779A1 (de) 2016-05-19
EP3020974B1 (fr) 2020-09-09
DE102014116779B4 (de) 2016-07-21

Similar Documents

Publication Publication Date Title
AT517756B1 (de) Vorrichtung und Verfahren zur Verarbeitung von thermoplastischem Kunststoff mit einer Blasvorrichtung für eine Transportschnecke
DE102011101648B4 (de) Schraubenmaschine, insbesondere Schraubenspindelpumpe
EP2710896B1 (fr) Dispositif d'acheminement de produits alimentaires et procédé d'acheminement d'un produit alimentaire
DE4126390A1 (de) Misch- und aufbereitungsvorrichtung mit austragspumpe
DE102014116779B4 (de) System zur Förderung viskoser Medien und Verfahren zum Fördern eines viskosen Mediums mit einem solchen System
WO2019211109A1 (fr) Machine de mélange et de malaxage
EP2230064A1 (fr) Extrudeuse à deux vis pour masses céramiques
WO2017050811A1 (fr) Dispositif et procédé pour traiter de la matière thermoplastique au moyen d'un dispositif de concassage / transport amélioré
WO2016001109A1 (fr) Système de filtre pour matière en fusion avec système de transport à vis de rétrolavage
DE1145787B (de) Schneckenstrangpresse mit einem Stauabschnitt, dessen Querschnitt veraenderlich ist
EP2718191B1 (fr) Dispositif de distribution d'aliment et procédé de mise en portions et de distribution d'aliments coulants
EP2514328B1 (fr) Dispositif destiné à extruder des masses d'aliments
EP2468106A1 (fr) Dispositif et procédé de répartition d'air résiduel dans des masses pâteuses, notamment pour la fabrication de saucisses
EP2199059A2 (fr) Assemblée extrudeuse comprenant une pompe à engrenages et le mode de fonctionnement d'un tel arrangement
WO2022135855A1 (fr) Technologie d'évacuation pour filtres à plastique
EP1502724B1 (fr) Filtre pour machines de traitement, spécialement extrudeuses
DE1202055B (de) Vorrichtung zum Herstellen gepresster Futterkuchen
DE10111001A1 (de) Fleischwolf
CH712621A2 (de) Mischer mit Einfach-Befüllung und kontinuierlicher Produktausgabe.
DE1900567A1 (de) Doppelschnecken-Druckfoerderer fuer Wurstbraet od.dgl.
EP3855900B1 (fr) Procédé et dispositif pour le transport et la plastification continus de lait caillé
DE102012112747A1 (de) Plastifizierzylinder einer Spritzgießmaschine
DE102004050810A1 (de) Einwellige, kontinuierlich arbeitende Misch- und Knetmaschine
EP3497329B1 (fr) Vanne pour matériaux visqueux
EP4052884A1 (fr) Clapet anti-retour

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20161103

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200424

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1311906

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200915

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502015013411

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201210

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201209

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210111

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210109

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502015013411

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201116

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20201130

26N No opposition filed

Effective date: 20210610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20221130

Year of fee payment: 8

Ref country code: GB

Payment date: 20221123

Year of fee payment: 8

Ref country code: FR

Payment date: 20221118

Year of fee payment: 8

Ref country code: DE

Payment date: 20221130

Year of fee payment: 8

Ref country code: AT

Payment date: 20221117

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20221124

Year of fee payment: 8

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230518

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502015013411

Country of ref document: DE

Representative=s name: KARO IP PATENTANWAELTE KAHLHOEFER ROESSLER KRE, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240503

Year of fee payment: 9